Fire alarm



FIG. 1 is a perspective view of a fire alarm showing our new design;

FIG. 2 is a front elevational view showing the design for the fire alarm of FIG. 1;

FIG. 3 is a rear elevational view showing the design for the fire alarm of FIG. 1;

FIG. 4 is a right side elevational view showing the design for the fire alarm of FIG. 1;

FIG. 5 is a left side elevational view showing the design for the fire alarm of FIG. 1;

FIG. 6 is a top plan view showing the design for the fire alarm of FIG. 1; and,

FIG. 7 is a bottom plan view showing the design for the fire alarm of FIG. 1.

The broken lines shown in the drawings illustrate portions of the fire alarm that form no part of the claimed design. 

CLAIM The ornamental design for a fire alarm, as shown and described. 